The defect
THE BRAKE INTERLOCK SHUTTLE VALVE ASSEMBLY COULD UNDER A HEAVY SERVICE BRAKE APPLICATION FRACTURE OR FRAGMENT THE INTERNAL SHUTTLE PISTON.
The risk
THE FRACTURE OR FRAGMENTION OF THE INTERLOCK SHUTTLEVALVE PISTON COULD RESULT IN PARTIAL OR COMPLETE LOSS OF REAR BRAKING. AREDUCTION IN BRAKING ABILITY COULD RESULT IN A VEHICLE CRASH WITHOUT PRIORWARNING.
The remedy
NEW IMPROVED BRAKE INTERLOCK SHUTTLE ASSEMBLY WILL BE INSTALLED.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| GMC T8H | 1986 |
| GMC TC4 | 1987 |
Components: SERVICE BRAKES, AIR:CONTROLS, PEDALS AND LINKAGES
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| GMC T8H | 1986 | 0 | 1 |
| GMC TC4 | 1987 | 0 | 1 |
Other service brakes, air recalls in 1987
12 of the 197 recall campaigns reported to NHTSA in 1987 concerned the service brakes, air; GENERAL MOTORS CORP. filed 1,195 campaigns in all.
| 87V174000 12 Nov 1987 | THOMAS BUILT BUSES, INC. |
| 87V160000 14 Oct 1987 | MAZDA (NORTH AMERICA),INC |
| 87V158000 6 Oct 1987 | VOLKSWAGEN OF AMERICA,INC |
| 87V147000 15 Sept 1987 | FREIGHTLINER CORP. |
| 87V145000 15 Sept 1987 | VOLVO GM HEAVY TRUCK CORP |
| 87V130000 14 Aug 1987 | HOLIDAY RAMBLER CORP. |
| 87V123000 5 Aug 1987 | ESTABLISHMENT INDUSTRIES |
| 87V121000 3 Aug 1987 | GENERAL MOTORS CORP. |
NHTSA recalls (public domain) · all recalls of 1987